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SteveTech

@ SteveTech @aussie.zone

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110
Joined
7 mo. ago

  • What can I do with no job and no VPS?

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  • Haha I love how this has progressed, from 'What free VPS?' then 'Free VPS doesn't work' and now we're at 'What can I do without a VPS?'.

    Anyway, I was self hosting from home well before I started playing with VPSs, so it's a good way to get started before having to spend money. And I still self host most of my infrastructure just because I prefer upfront costs to subscriptions.

    Edit: I meant to add if you don't have a publicly routable IP or don't want to port forward, you can use something like Cloudflare Tunnels to proxy everything through their servers.

  • Light bulbs

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  • IKEA's seem okay too, they're just not the brightest around. The older models are ZigBee, the newer ones are Matter over Thread (although I've heard some will also work with ZigBee).

  • What Are Btrfs Subvolumes? And Why They’re Better Than Traditional Linux Partitions

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  • You can snapshot them independently. E.g. I snapshot / on every update and boot, /home every boot, and temporary file directories such as /tmp & /var/tmp don't get snapshot at all and are also mounted with nodev,nosuid,noexec flags.

  • Coffee ☕

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  • Blocking the Internet Archive Won’t Stop AI, But It Will Erase the Web’s Historical Record

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  • Deleted

    Permanently Deleted

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  • Deleted

    Permanently Deleted

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  • I think what they're trying to say is, if Windows was a community project those requirements likely wouldn't exist to begin with.

  • It's not about children

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  • Any #Linux users on #IntelArc here?

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  • The PC is rather old, 7th Gen i7, officially doesn't support the GPU. The BIOS is pretty outdated too.

    That shouldn't effect fan speeds, it'll give you some performance issues, especially if you don't have Resizeable BAR enabled, but I don't see how it could effect any of the sensors.

    Previous owner said the cards ran silent, and the case is very closed so I doubt something moved in shipping

    Hmm, I've heard some crazy stories about shipping. Was the GPU reinforced by foam or something? Otherwise it will shake about.

    I already run the nvtopPackages.intel and it displays more than sensors I think.

    Perfect!

    The VRAM temperature fix sounds fun but I think there is no need right now. I should learn how to build "derivations" which is how you apply patches declaratively afaik.

    Edit: Just realised Mastodon really screws up code blocks, view the patch from Lemmy.

     patch
        
From 26cc3d3444564abb2650ad76957dbb3aac3cf1f8 Mon Sep 17 00:00:00 2001
From: Stephen Horvath <s.horvath@outlook.com.au>
Date: Sun, 29 Jun 2025 11:50:53 +1000
Subject: [PATCH] drm/i915/hwmon: Expose VRAM Temperature
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

This patch adds the VRAM temperature to the i915 hwmon driver. The
temperature is exposed through the temp2_input sysfs attribute.

$ sensors
i915-pci-0300
Adapter: PCI adapter
in0: 663.00 mV
fan1: 746 RPM
temp1: +49.0°C
temp2: +52.0°C
power1: N/A  (max = 190.00 W, rated max =   0.00 W)
energy1: 25.04 kJ

Signed-off-by: Stephen Horvath <s.horvath@outlook.com.au>
---
 drivers/gpu/drm/i915/i915_hwmon.c        | 41 ++++++++++++++++--------
 drivers/gpu/drm/i915/intel_mchbar_regs.h |  2 ++
 2 files changed, 30 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_hwmon.c b/drivers/gpu/drm/i915/i915_hwmon.c
index 7dfe1784153f..7d04b6221f4b 100644
--- a/drivers/gpu/drm/i915/i915_hwmon.c
+++ b/drivers/gpu/drm/i915/i915_hwmon.c
@@ -40,6 +40,7 @@ struct hwm_reg {
 	i915_reg_t energy_status_all;
 	i915_reg_t energy_status_tile;
 	i915_reg_t fan_speed;
+	i915_reg_t vram_temp;
 };
 
 struct hwm_energy_info {
@@ -282,7 +283,7 @@ static const struct attribute_group *hwm_groups[] = {
 };
 
 static const struct hwmon_channel_info * const hwm_info[] = {
-	HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT),
+	HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT, HWMON_T_INPUT),
 	HWMON_CHANNEL_INFO(in, HWMON_I_INPUT),
 	HWMON_CHANNEL_INFO(power, HWMON_P_MAX | HWMON_P_RATED_MAX | HWMON_P_CRIT),
 	HWMON_CHANNEL_INFO(energy, HWMON_E_INPUT),
@@ -314,34 +315,46 @@ static int hwm_pcode_write_i1(struct drm_i915_private *i915, u32 uval)
 }
 
 static umode_t
-hwm_temp_is_visible(const struct hwm_drvdata *ddat, u32 attr)
+hwm_temp_is_visible(const struct hwm_drvdata *ddat, u32 attr, int chan)
 {
 	struct i915_hwmon *hwmon = ddat->hwmon;
 
-	if (attr == hwmon_temp_input && i915_mmio_reg_valid(hwmon->rg.pkg_temp))
+	if (attr == hwmon_temp_input && chan == 0 &&
+		i915_mmio_reg_valid(hwmon->rg.pkg_temp))
+		return 0444;
+
+	if (attr == hwmon_temp_input && chan == 1 &&
+		i915_mmio_reg_valid(hwmon->rg.vram_temp))
 		return 0444;
 
 	return 0;
 }
 
 static int
-hwm_temp_read(struct hwm_drvdata *ddat, u32 attr, long *val)
+hwm_temp_read(struct hwm_drvdata *ddat, u32 attr, int chan, long *val)
 {
 	struct i915_hwmon *hwmon = ddat->hwmon;
 	intel_wakeref_t wakeref;
 	u32 reg_val;
 
-	switch (attr) {
-	case hwmon_temp_input:
+	if (attr != hwmon_temp_input)
+		return -EOPNOTSUPP;
+
+	switch (chan) {
+	case 0:
 		with_intel_runtime_pm(ddat->uncore->rpm, wakeref)
 			reg_val = intel_uncore_read(ddat->uncore, hwmon->rg.pkg_temp);
-
-		/* HW register value is in degrees Celsius, convert to millidegrees. */
-		*val = REG_FIELD_GET(TEMP_MASK, reg_val) * MILLIDEGREE_PER_DEGREE;
-		return 0;
+		break;
+	case 1:
+		with_intel_runtime_pm(ddat->uncore->rpm, wakeref)
+			reg_val = intel_uncore_read(ddat->uncore, hwmon->rg.vram_temp);
+		break;
 	default:
-		return -EOPNOTSUPP;
+		return -EINVAL;
 	}
+	/* HW register value is in degrees Celsius, convert to millidegrees. */
+	*val = REG_FIELD_GET(TEMP_MASK, reg_val) * MILLIDEGREE_PER_DEGREE;
+	return 0;
 }
 
 static umode_t
@@ -727,7 +740,7 @@ hwm_is_visible(const void *drvdata, enum hwmon_sensor_types type,
 
 	switch (type) {
 	case hwmon_temp:
-		return hwm_temp_is_visible(ddat, attr);
+		return hwm_temp_is_visible(ddat, attr, channel);
 	case hwmon_in:
 		return hwm_in_is_visible(ddat, attr);
 	case hwmon_power:
@@ -751,7 +764,7 @@ hwm_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
 
 	switch (type) {
 	case hwmon_temp:
-		return hwm_temp_read(ddat, attr, val);
+		return hwm_temp_read(ddat, attr, channel, val);
 	case hwmon_in:
 		return hwm_in_read(ddat, attr, val);
 	case hwmon_power:
@@ -855,6 +868,7 @@ hwm_get_preregistration_info(struct drm_i915_private *i915)
 		hwmon->rg.energy_status_all = PCU_PACKAGE_ENERGY_STATUS;
 		hwmon->rg.energy_status_tile = INVALID_MMIO_REG;
 		hwmon->rg.fan_speed = PCU_PWM_FAN_SPEED;
+		hwmon->rg.vram_temp = IS_DG2(i915) ? BMG_VRAM_TEMPERATURE : INVALID_MMIO_REG;
 	} else {
 		hwmon->rg.pkg_temp = INVALID_MMIO_REG;
 		hwmon->rg.pkg_power_sku_unit = INVALID_MMIO_REG;
@@ -863,6 +877,7 @@ hwm_get_preregistration_info(struct drm_i915_private *i915)
 		hwmon->rg.energy_status_all = INVALID_MMIO_REG;
 		hwmon->rg.energy_status_tile = INVALID_MMIO_REG;
 		hwmon->rg.fan_speed = INVALID_MMIO_REG;
+		hwmon->rg.vram_temp = INVALID_MMIO_REG;
 	}
 
 	with_intel_runtime_pm(uncore->rpm, wakeref) {
diff --git a/drivers/gpu/drm/i915/intel_mchbar_regs.h b/drivers/gpu/drm/i915/intel_mchbar_regs.h
index dc2477179c3e..94a9f4680c41 100644
--- a/drivers/gpu/drm/i915/intel_mchbar_regs.h
+++ b/drivers/gpu/drm/i915/intel_mchbar_regs.h
@@ -255,4 +255,6 @@
 
 #define BXT_GT_PERF_STATUS			_MMIO(MCHBAR_MIRROR_BASE_SNB + 0x7070)
 
+#define BMG_VRAM_TEMPERATURE			_MMIO(0x1382c0)
+
 #endif /* __INTEL_MCHBAR_REGS */

  • Any #Linux users on #IntelArc here?

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  • I don't have a nixos account so I'm just replying here.

    I run an A770 LE on Debian Testing and most things seemed to work out of the box. I also contributed ARC support into nvtop, so I can explain some of the values from sensors.

    • fan speed still max and no reporting

    Not sure, maybe the fan become slightly unplugged, does it work in Windows? I know the fans on some sparkle cards have a different number of pulses per rotation that can screw with the readings, but it shouldn't be 0.

    • no voltage or power usage shown

    Voltage only sometimes works for me and I'm not sure what it correlates to. But the power usage is shown, it just shows it in kilojoules since the card got power, not in watts. See this comment I made for a conversion.

    Just fan control…

    AFAIK, there's nothing you can do.

    I do have a patch somewhere that can display VRAM temperature if you'd like to try it and nixos has a good way of applying patches.

  • ULLI: A USB-less Linux Installer

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  • Oh damn it's a single ~2830 line powershell or python file depending on the OS. Neat idea, but I don't trust it in the slightest.

  • Where would the three wise men go if they followed a planet?

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  • Who would've guessed

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  • Yep, here's UEFI-DOOM.

    Although UEFI isn't as low-level as the BIOS stuff, but I couldn't find a BIOS port of DOOM so UEFI will do.

  • TrueNAS build system going closed source

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  • Run browser and/or mpv directly on hardware?

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  • There was a really interesting talk at USENIX a few years ago (Usenix 21 keynote with Timothy Roscoe

    Thanks for this!

    So you are not wrong about what you are calling bare metal, but that usage is more popular at the moment, but the older meaning of bare metal actually just means "no OS." It's still very common in embedded world.

    Oh yeah I'm aware and I wasn't disputing you, I just wanted to point out that in the context of servers that definition is quite ambiguous. But I did know what you meant.

    For servers, it seems the papers are calling it "Bare PC" Example: https://doi.org/10.1109/HPCC.2009.34

    This was also quite interesting and I'm actually surprised IIS did as well as it did. I'm actually looking for thesis ideas so I'll add this to my list and potentially see how much things have changed 17 years later.

  • Run browser and/or mpv directly on hardware?

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  • The os is a layer that mediates these devices.

    The OS doesn't just mediate the devices, it also provides a consistent interface for software to talk to the hardware. E.g. software doesn't care if you're using a USB or PS/2 keyboard, the operating system handles that.

    I’ve seen some interest in bare metal web servers

    Usually in the context of servers, bare metal means it's not running in a VM, and you are dedicated to the hardware. E.g. one server may otherwise be running multiple customers all isolated from each other using VMs, with bare metal servers you are the only customer using the hardware. They're supposedly more secure as there isn't another customer that could use some VM escape vulnerability and read your data. It's nothing to do with whether you are running an OS or not (although no OS is very not practical on production servers).

  • Rate limiting

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  • Nginx also has support for rate limiting built in.

    On the topic of blocking, I block useragents starting with Mozilla/5.0 that are using HTTP/1.X, since all modern browsers default to HTTP/2.0 and anything else is usually always bad bots. You can also return 426 with the Upgrade: h2c header to let some older browsers know to use HTTP/2.0.

  • Update on Frontier IPv6

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  • Wow, thanks for the update!

    Edit: You can possibly look into NPT if you want to use SLAAC on your LAN, it's like NAT but for your prefix, so the connection is still somewhat end to end.

    Although one thing to note, fd00::/8 is allocated to be used as a private address, however most browsers will prioritise IPv4 over these ULA addresses. You can pick your own prefix from the unallocated addresses, which is kinda sketchy but then browsers trust it.

  • What's the easiest way to test the latest kernel?

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  • If you can't find an easier way, compiling your own kernel isn't too hard. After you've git cloned the new kernel, you can just copy your distro's kernel config (they're usually in /boot), and then use make deb-pkg -j$(nproc) to compile to a .deb file, so it's easier to uninstall.

    At the start of compilation it will ask about a few new options, you can just press enter to use the default option, or decide for yourself. Probably don't worry about make menuconfig unless you want to.

    There's proper tutorials online if you wish to do this.